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  WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060161106023d5,0 (ssd36): offline
WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060161106023d5,0 (ssd36): offline
NOTICE: vxvm:vxdmp: disabled path 118/0x120 belonging to the dmpnode 276/0xf8
WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060169106023d5,0 (ssd37): offline
WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060169106023d5,0 (ssd37): offline

Using "iostat -E", ssd36 and ssd37 are found to be EMC CLARiiON Cx700 Array's presented special LUN - "LUNZ".

  # iostat -E | more
...
ssd36  Soft Errors: 18 Hard Errors: 0 Transport Errors: 0  Vendor: DGC
Product: LUNZ      Revision: 0216 Serial No:    Size: 0.00GB <0 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 18 Predictive Failure Analysis: 0

  ssd37  Soft Errors: 18 Hard Errors: 0 Transport Errors: 0  Vendor: DGC
Product: LUNZ      Revision: 0216 Serial No:    Size: 0.00GB <0 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 18 Predictive Failure Analysis: 0

And similar warning messages can be noticed once "format" command is issued:

  # format
Searching for disks...done

  c4t500604844A36E767d0: configured with capacity of 44.06MB
c6t500604844A36E768d0: configured with capacity of 44.06MB

  Aug 31 16:53:40 domain3    Corrupt label; wrong magic number
Aug 31 16:53:40 domain3 scsi: [ID 107833 kern.warning] WARNING:
/pci@9d,600000/SUNW,qlc@1/fp@0,0/ssd@w500604844a36e767,0 (ssd0)
:
Aug 31 16:53:40 domain3    Corrupt label; wrong magic number
Aug 31 16:53:40 domain3 scsi: [ID 107833 kern.warning] WARNING:
/pci@bd,600000/SUNW,qlc@1/fp@0,0/ssd@w500604844a36e768,0 (ssd1)

When running Sun[TM] Explorer to collect system information, the following WARNINGs messages are seen:

explorer: [ID 702911 daemon.notice] Explorer started
scsi: [ID 365881 kern.info]  Vendor 'DGC', product 'LUNZ', (unknown capacity)
scsi: [ID 107833 kern.warning] WARNING: /pci@7d,700000/SUNW,qlc@1/fp@0,0/ssd@w5006016930600f13,0 (ssd72):
Error for Command: <undecoded cmd 0x5a>    Error Level: Informational
scsi: [ID 107833 kern.notice]  Requested Block: 0  Error Block: 0
scsi: [ID 107833 kern.notice]  Vendor: DGC         Serial Number: 0000000000CL
scsi: [ID 107833 kern.notice]  Sense Key: Illegal Request
scsi: [ID 107833 kern.notice]  ASC: 0x25 (LUN not supported), ASCQ: 0x0, FRU: 0x0
scsi: [ID 107833 kern.warning] WARNING: /pci@7d,700000/SUNW,qlc@1/fp@0,0/ssd@w5006016930600f13,0 (ssd72):
Error for Command: <undecoded cmd 0x25>   Error Level: Informational
scsi: [ID 107833 kern.notice]  Requested Block: 0  Error Block: 0
scsi: [ID 107833 kern.notice]  Vendor: DGC         Serial Number: 0000000000CL
Error for Command: test unit ready      Error Level: Fatal
scsi: [ID 107833 kern.notice]   Requested Block: 0  Error Block: 0
scsi: [ID 107833 kern.notice]   Vendor: DGC       Serial Number: 0000000000CL
scsi: [ID 107833 kern.notice]   Sense Key: Not Ready
scsi: [ID 107833 kern.notice]   ASC: 0x4 (<vendor unique code 0x4>), ASCQ: 0x3, FRU: 0x0
...
explorer: [ID 702911 daemon.notice] Explorer completed !

After confirming with EMC Support engineers, the above LUNs which is LUN ID = 0(that is d0) is EMC Symmetrix Serial Storage - DMX serial storage Gatekeeper/VCM Database volumes(VCMDB). It is not for storing customer data, but for store storage used control and communications information.

The above mentioned Special LUN, "LUNZ", comes from EMC CLARiiON Storage, it is for control and communications usage. Solaris Operating System will not use it as a data LUN.

For Sun hosts connected to EMC Symmetrix Serial DMX storage, Sun engineer can inform customer that EMC engineer can request a modification of DMX Storage BIN file. Once EMC engineer agrees to help on this and the BIN file is modified, request a reconfigure reboot of the Solaris host. Then the Gatekeeper/VCM database Volumes (VCMDB) LUN related errors would disappear.

For EMC CLARiiON CX700 Array's presented special LUN, "LUNZ", get help from EMC engineer to Disable "arraycommpath" setting on CX700 array for each Solaris Server which can be done via command "navicli". Once EMC engineer completes the settings, initiate reboot of Solaris Operating System, and then the "LUNZ" LUN would disappear as well.

All above mentioned actions need EMC engineers' involvement. Sun Field engineers are not encouraged to do such configurations on an EMC array.

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